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Finding the Fourth Proportional to 1,071.07, 1,478.06 and 599

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Solution

The fourth proportional to 1,071.07, 1,478.06 and 599 is: 826.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071.07 : 1,478.06 = 599 : x
  2. Step 2: Convert to fraction form
    1,071.07/1,478.06 = 599/x
  3. Step 3: Cross multiply
    1,071.07x = 1,478.06 × 599
  4. Step 4: Simplify right side
    1,071.07x = 885,357.94
  5. Step 5: Solve for x
    x = 885,357.94/1,071.07
  6. Step 6: Final answer
    x = 826.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.